| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
3.7%
|
| 2 | 1 |
0.9%
|
|
| 3 | 13 |
12.1%
|
|
| 4 | 11 |
10.3%
|
|
| 5 | 16 |
15%
|
|
| 6 | 18 |
16.8%
|
|
| 7 | 15 |
14%
|
|
| 8 | 17 |
15.9%
|
|
| 9 | 3 |
2.8%
|
|
| 10 | Very effective | 9 |
8.4%
|
| 11 | Don't know | 71 | |
| Sysmiss | 15 |